CN215663045U - Battery parallel management system - Google Patents
Battery parallel management system Download PDFInfo
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- CN215663045U CN215663045U CN202121605658.7U CN202121605658U CN215663045U CN 215663045 U CN215663045 U CN 215663045U CN 202121605658 U CN202121605658 U CN 202121605658U CN 215663045 U CN215663045 U CN 215663045U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The utility model provides a battery parallel management system, which comprises a plurality of battery packs and a battery parallel management module; the battery parallel management module comprises a discharge switch group and a charge switch group; one path of the positive electrode of the battery pack is respectively connected with the positive input end of each discharge switch in the discharge switch group, and the other path of the positive electrode of the battery pack is respectively connected with the reverse input end of the charge switch group; the reverse output ends of all the discharge switches are connected together to be used as the discharge output positive electrode of the battery parallel management module; the positive input ends of all the charging switches are connected together to serve as the charging input positive electrode of the battery parallel management module; the negative poles of the battery pack are connected together to serve as a discharging output negative pole or a charging input negative pole. The utility model realizes that when the output voltage difference of a plurality of parallel batteries is large, the output voltage of each battery is adjusted to be within the preset voltage requirement range, and a plurality of batteries with different voltages can be directly used in parallel.
Description
Technical Field
The utility model belongs to the technical field of vehicle battery management, and particularly relates to a battery parallel management system.
Background
With the demand of people on the endurance mileage of the electric vehicle, correspondingly, the battery capacity of the electric motorcycle or the electric tricycle is configured to be higher by vehicle manufacturers, but after the battery capacity of the electric motorcycle or the electric tricycle is configured to be higher (for example, a 4Kwh lithium battery is configured), the battery weight is too heavy. The overweight battery obviously does not facilitate taking the battery off the vehicle for charging. When the weight of the battery is too large, the battery can be divided into two or more independent small battery packs on the premise that the total electric quantity is not changed, so that the weight of each independent battery pack (unit) can be lighter as long as the battery is properly distributed, and therefore portable charging is achieved, namely the independent battery packs are taken down from the vehicle and are respectively charged.
A large battery pack is divided into a plurality of independent small battery units, and each unit is light in weight and can be conveniently taken down for charging. However, in this way, there are two problems: firstly, when discharging, two sets of battery cell when parallelly connected, if the electric quantity of two sets of batteries is inconsistent, the high charging that gives the electric quantity of electric quantity low can appear, this is the condition that does not allow to appear, the battery that the electric quantity is low overdischarge scheduling problem also can appear, secondly, to two parallelly connected battery cell, when charging the battery on the car, because two sets of battery cell are parallelly connected, if two sets of battery cell's electric quantity is inconsistent, especially under extreme condition, when a set of full charge, and when another group electric quantity is empty, the problem that the battery that fully charges also can appear overcharges.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a battery parallel management system. When the output voltage difference of a plurality of batteries connected in parallel is large, the output voltage of each battery can be adjusted to be within a preset voltage requirement range, so that the batteries with different voltages can be directly connected in parallel for use.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a battery parallel management system comprises a plurality of battery packs and a battery parallel management module;
the battery parallel management module comprises a discharge switch group and a charge switch group; one path of the positive electrode of the battery pack is respectively connected with the positive input end of each discharge switch in the discharge switch group, and the other path of the positive electrode of the battery pack is respectively connected with the reverse input end of the charge switch group; the reverse output ends of all the discharge switches in the discharge switch group are connected together to be used as the discharge output positive electrode of the battery parallel management module; the positive input ends of all the charging switches in the charging switch group are connected together to be used as the charging input positive electrode of the battery parallel management module; and the cathodes of the battery packs are connected together to be used as the discharging output cathode or the charging input cathode of the battery parallel management module.
Further, the number of the battery packs is equal to the number of the discharge switches; and the number of the discharge switches is equal to the number of the charge switches.
Furthermore, the discharge switch adopts a first diode, and the charge switch adopts a second diode;
one path of the positive electrode of the battery pack is connected to the anode of the first diode; and the other path is connected to the cathode of the second diode;
the cathodes of the first diodes are connected together to serve as the discharge output positive electrode of the battery parallel management module; anodes of the second diodes are connected together to serve as the charging input anode of the battery parallel management module;
and the cathodes of the battery packs are connected together to be used as the discharging output cathode or the charging input cathode of the battery parallel management module.
Further, when the discharge switch adopts a first N-channel MOS transistor and the charge switch adopts a second N-channel MOS transistor;
one path of the positive electrode of the battery pack is connected to the drain electrode of the first N-channel MOS tube; the other path of the MOS transistor is connected to the source electrode of the second N-channel MOS transistor;
the grid electrode of the first N-channel MOS tube is connected with the drain electrode; the source electrodes of the first N-channel MOS tubes are connected together to serve as the discharge output positive electrode of the battery parallel management module;
the grid electrode of the second N-channel MOS tube is connected with the drain electrode; the drains of the second N-channel MOS tubes are connected together to serve as the charging input anode of the battery parallel management module; and the cathodes of the battery packs are connected together to be used as the discharging output cathode or the charging input cathode of the battery parallel management module.
Further, the connection between the gate and the drain of the first N-channel MOS transistor specifically includes: the grid electrode and the drain electrode of the first N-channel MOS tube are connected through a resistor;
the connection of the grid electrode and the drain electrode of the second N-channel MOS tube is specifically as follows: and the grid electrode and the drain electrode of the second N-channel MOS tube are connected through a resistor.
Furthermore, the discharge switch adopts a first N-channel MOS tube, the charge switch adopts a second N-channel MOS tube, and the battery parallel management system comprises a control module;
the input end of the control module is in communication connection with both the anode and the cathode of the battery pack; the output end of the control module is respectively connected to the grid electrode of the first N-channel MOS tube and the grid electrode of the second N-channel MOS tube;
one path of the positive electrode of the battery pack is connected to the drain electrode of the first N-channel MOS tube, and the other path of the positive electrode of the battery pack is connected to the source electrode of the second N-channel MOS tube; the source electrodes of the first N-channel MOS tubes are connected together to serve as the discharge output positive electrode of the battery parallel management module; the drains of the second N-channel MOS tubes are connected together to serve as the charging input anode of the battery parallel management module; and the cathodes of the battery packs are connected together to be used as the discharging output cathode or the charging input cathode of the battery parallel management module.
Further, the communication connection mode adopts wireless communication or wired connection.
Furthermore, the control module adopts an editable chip with input and output functions; and the number of output pins of the editable chip is equal to the number of the discharge switches.
The effect provided in the summary of the utility model is only the effect of the embodiment, not all the effects of the utility model, and one of the above technical solutions has the following advantages or beneficial effects:
the utility model provides a battery parallel management system, which comprises a plurality of battery packs and a battery parallel management module; the battery parallel management module comprises a discharge switch group and a charge switch group; one path of the positive electrode of the battery pack is respectively connected with the positive input end of each discharge switch in the discharge switch group, and the other path of the positive electrode of the battery pack is respectively connected with the reverse input end of the charge switch group; the reverse output ends of all the discharge switches in the discharge switch group are connected together to be used as the discharge output positive electrode of the battery parallel management module; the positive input ends of all the charging switches in the charging switch group are connected together to be used as the charging input positive electrode of the battery parallel management module; the negative electrodes of the battery packs are connected together to serve as the discharging output negative electrode or the charging input negative electrode of the battery parallel management module. The charging switch and the discharging switch can adopt diodes and MOS tubes, and can also be provided with a control module. The parallel controller can close the output of the battery pack with low electric quantity when the electric quantities of the battery packs are inconsistent in the discharging process, only the battery with high electric quantity is discharged, the electric quantity of the battery pack with high electric quantity is gradually reduced along with the discharging process, and when the electric quantities of all the batteries are consistent, the parallel controller is connected with the battery packs with low electric quantity again to discharge the two groups of batteries simultaneously; in the charging process, when all the battery electric quantities are inconsistent, the parallel controller can close the charging input of the battery pack with high electric quantity, only the battery pack with low electric quantity is charged, the electric quantity of the battery pack with low electric quantity is gradually increased along with the charging, and when all the battery packs are consistent, the parallel controller is connected with the battery pack with high electric quantity again, so that all the battery packs are charged simultaneously. Therefore, the utility model realizes that when the output voltage difference of a plurality of batteries connected in parallel is large, the output voltage of each battery can be adjusted to be within the preset voltage requirement range, so that a plurality of batteries with different voltages can be directly connected in parallel for use.
Drawings
Fig. 1 is a schematic diagram of a first circuit connection of a battery parallel management system according to embodiment 1 of the present invention;
fig. 2 is a schematic diagram of a second circuit connection of a battery parallel management system according to embodiment 2 of the present invention;
fig. 3 is a schematic diagram of a third circuit connection of a battery parallel management system according to embodiment 3 of the present invention.
Detailed Description
In order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different features of the utility model. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and procedures are omitted so as to not unnecessarily limit the utility model.
Example 1
The embodiment 1 of the utility model provides a battery parallel management system, which comprises a plurality of battery packs and a battery parallel management module;
the battery parallel management module comprises a discharge switch group and a charge switch group; one path of the positive electrode of the battery pack is respectively connected with the positive input end of each discharge switch in the discharge switch group, and the other path of the positive electrode of the battery pack is respectively connected with the reverse input end of the charge switch group; the reverse output ends of all the discharge switches in the discharge switch group are connected together to be used as the discharge output positive electrode of the battery parallel management module; the positive input ends of all the charging switches in the charging switch group are connected together to be used as the charging input positive electrode of the battery parallel management module; and the cathodes of the battery packs are connected together to be used as the discharging output cathode or the charging input cathode of the battery parallel management module.
The number of battery packs is equal to the number of discharge switches; and the number of discharge switches is equal to the number of charge switches.
The embodiment 1 of the utility model is illustrated by two battery packs, the protection scope of the utility model is not limited to the range listed in the embodiment 1, and the situations that two groups of batteries are mutually charged and one group of batteries is overcharged or overdischarged are avoided. In the discharging process, when the electric quantities of the two groups of batteries are different, the parallel controller can close the output of the group with low electric quantity, only the group with high electric quantity is discharged, the electric quantity of the battery group with high electric quantity is gradually reduced along with the discharging, and when the electric quantities of the two groups of batteries are the same, the parallel controller is connected with the battery group with low electric quantity, so that the two groups of batteries are discharged at the same time; in the charging process, when the electric quantities of the two groups of batteries are inconsistent, the parallel controller can close the charging input of the group with high electric quantity, only the group with low electric quantity is charged, the electric quantity of the battery pack with low electric quantity is gradually increased along with the charging, and when the electric quantities of the two groups of batteries are consistent, the parallel controller is connected with the battery pack with high electric quantity again to charge the two groups of batteries simultaneously.
Fig. 1 is a schematic diagram of a first circuit connection of a battery parallel management system according to embodiment 1 of the present invention;
the discharging switch adopts a first N-channel MOS tube, the charging switch adopts a second N-channel MOS tube, and the battery parallel management module comprises a control module;
the input end of the control module is in communication connection with both the anode and the cathode of the battery pack; the output end of the control module is respectively connected to the grid electrode of the first N-channel MOS tube and the grid electrode of the second N-channel MOS tube;
one path of the positive electrode of the battery pack is connected to the drain electrode of the first N-channel MOS tube, and the other path of the positive electrode of the battery pack is connected to the source electrode of the second N-channel MOS tube; the source electrodes of the first N-channel MOS tubes are connected together to serve as the discharge output anode of the battery parallel management module; the drain electrodes of the second N-channel MOS tubes are connected together to serve as the charging input anode of the battery parallel management module; the negative electrodes of the battery packs are connected together to serve as the discharging output negative electrode or the charging input negative electrode of the battery parallel management module.
Because the MOS is a one-way conduction component, no matter the MOS is in a conduction state or a disconnection state, circuit isolation can be realized between the two groups of batteries, namely, the mutual charging phenomenon cannot occur between the two groups of batteries.
The working process of the embodiment 1 when the discharge is realized is as follows:
when two parallel batteries 13 and 14 are discharged simultaneously, the control unit 5 communicates with the batteries 13 and 14 through the communication lines 10 and 11, respectively, and the batteries 13 and 14 can send information of voltage, current, electric quantity (SOC), temperature and the like of the batteries to the control unit 5 through the communication lines 10 and 11.
The control unit 5 outputs signals 6 and 9 to the two discharge MOSs, 2 and 3 in the figure, respectively, by analyzing and judging, so that the discharge MOSs (2 and 3) are conducted.
When the electric quantity of the battery 13 is higher than that of the battery 14, the control unit only outputs the signal 6 to the MOS2 to control the battery 13 to discharge, and simultaneously does not output the signal 9 to the MOS3, namely the MOS3 is in a non-conducting state, so that the battery 14 does not discharge when the battery 13 discharges, and when the electric quantity of the battery 13 is consistent with that of the battery 14, the control unit 5 simultaneously outputs the signals 6 and 9 to enable the MOS2 and the MOS3 to be simultaneously conducted, and the purpose of balanced discharge of the two groups of batteries 13 and 14 is achieved.
When the battery 14 is higher than the battery 13 in power, the control unit only outputs the signal 9 to the MOS3 to control the battery 14 to discharge and does not output the signal 6 to the MOS2, that is, the MOS2 is in a non-conducting state, so that the battery 13 does not discharge while the battery 14 discharges, and when the power of the battery 14 is consistent with that of the battery 13, the control unit 5 outputs the signals 6 and 9 simultaneously to make the MOS2 and the MOS3 conduct simultaneously, thereby achieving the purpose of balanced discharge of the two groups of batteries 13 and 14.
When the battery fails, the control unit 5 can simultaneously turn off the MOS2 and the MOS3, thereby achieving the purpose of protecting the circuit.
When only one battery is provided, MOS2 and MOS3 can be conducted only one of them, and the vehicle can still run normally.
The working process of the embodiment 1 during charging is
When two parallel batteries 13 and 14 are charged simultaneously, the control unit 5 communicates with the batteries 13 and 14 through the communication lines 10 and 11, respectively, and the batteries 13 and 14 can not transmit the information of the voltage, the current, the electric quantity (SOC), the temperature and the like of the batteries to the control unit 5 through the communication lines 10 and 11. The control unit 5 analyzes and judges and outputs signals 7 and 8 to the two charging MOS devices (1 and 4 in the figure) respectively to turn on the discharging MOS devices (1 and 4).
When the electric quantity of the battery 13 is higher than that of the battery 14, the control unit only outputs a signal 8 to the MOS4 to control the battery 14 to be charged, and simultaneously does not output a signal 7 to the MOS1, namely the MOS1 is in a non-conducting state, so that the battery 13 is not charged when the battery 14 is charged, and when the electric quantity of the battery 14 is consistent with that of the battery 13, the control unit 5 simultaneously outputs the signals 7 and 8 to enable the MOS1 and the MOS4 to be simultaneously conducted, thereby achieving the purpose of balanced charging of the two groups of batteries 13 and 14.
When the battery 14 has a higher power than the battery 13, the control unit only outputs the signal 7 to the MOS1 to control the charging of the battery 13, and does not output the signal 8 to the MOS4, that is, the MOS4 is in a non-conducting state, so that the battery 14 is not charged while the battery 13 is charged, and when the power of the battery 13 is consistent with that of the battery 14, the control unit 5 simultaneously outputs the signals 7 and 8 to make the MOS1 and the MOS4 simultaneously conducting, thereby achieving the purpose of equalizing the charging of the two groups of batteries 13 and 14.
When the battery fails, the control unit 5 can simultaneously turn off the MOS1 and the MOS4, thereby achieving the purpose of protecting the circuit.
When there is only one battery, MOS1 and MOS4 will only conduct one of them and the vehicle can still be charged normally.
The communication connection mode in the embodiment 1 of the utility model adopts wireless communication or wired connection; the wireless communication mode comprises 485 communication, CAN communication, 232 communication or Bluetooth and the like.
The control module adopts an editable chip with input and output functions; and the number of output pins of the editable chip is equal to the number of the discharge switches.
Example 2
Embodiment 2 of the present invention provides a circuit that does not require the use of control and communication on the basis of embodiment 1. Fig. 2 is a schematic diagram of a second circuit connection of a battery parallel management system according to embodiment 2 of the present invention;
the discharging switch adopts a first N-channel MOS tube, and the charging switch adopts a second N-channel MOS tube;
one path of the positive electrode of the battery pack is connected to the drain electrode of the first N-channel MOS tube; the other path of the MOS transistor is connected to the source electrode of the second N-channel MOS transistor;
the grid electrode of the first N-channel MOS tube is connected with the drain electrode; the source electrodes of the first N-channel MOS tubes are connected together to serve as the discharge output anode of the battery parallel management module;
the grid electrode of the second N-channel MOS tube is connected with the drain electrode; the drains of the second N-channel MOS tubes are connected together to serve as the charging input anode of the battery parallel management module; the negative electrodes of the battery packs are connected together to serve as the discharging output negative electrode or the charging input negative electrode of the battery parallel management module.
When the two groups of batteries 13 and 14 connected in parallel are discharged simultaneously, the control terminals 6 and 9 of the MOS2 and the MOS3 are electrified, so that the MOS2 and the MOS3 are conducted simultaneously, and the purpose of simultaneously discharging the two groups of batteries under the condition of electrical isolation is achieved.
When only one battery is provided, MOS2 and MOS3 can be conducted only one of them, and the vehicle can still run normally.
When two groups of batteries 13 and 14 connected in parallel are charged simultaneously, the control terminals 7 and 8 of the MOS1 and the MOS4 are electrified, so that the MOS1 and the MOS4 are conducted simultaneously, and the purpose of simultaneously charging the two groups of batteries under the condition of electrical isolation is achieved.
When there is only one battery, MOS1 and MOS4 will only conduct one of them and the vehicle can still be charged normally.
Example 3
Invention embodiment 3 provides a circuit using a diode on the basis of embodiment 2. Fig. 3 is a schematic diagram of a second circuit connection of a battery parallel management system according to embodiment 3 of the present invention; because the diode is a one-way conduction component, the circuit uses the diode to realize the circuit isolation between the two groups of batteries, namely, the mutual charging phenomenon between the two groups of batteries can not occur.
The discharging switch adopts a first diode, and the charging switch adopts a second diode;
one path of the positive electrode of the battery pack is connected to the anode of the first diode; and the other path is connected to the cathode of the second diode;
the cathodes of the first diodes are connected together to serve as the discharge output anode of the battery parallel management module; anodes of the second diodes are connected together to serve as the charging input anode of the battery parallel management module;
the negative electrodes of the battery packs are connected together to serve as the discharging output negative electrode or the charging input negative electrode of the battery parallel management module.
The battery parallel management module is internally provided with four high-power diodes which are conducted in one direction, namely 1, 2, 3 and 4 respectively, when the batteries are discharged, the diodes 2 and 3 are conducted to realize the simultaneous discharge of two groups of batteries (a battery pack A and a battery pack B), and due to the characteristic of the one-way conduction of the diodes, the battery pack A and the battery pack B are isolated and cannot be charged mutually. When only one battery is provided, only one of the diodes 2 and 3 is conducted, and the vehicle can still run normally.
When the batteries are charged, the diode 1 and the diode 4 are conducted, so that the two groups of batteries (the battery pack A and the battery pack B) are charged simultaneously, and due to the characteristic of unidirectional conduction of the diodes, the battery pack A and the battery pack B are isolated, so that the two groups of batteries cannot be charged mutually. When there is only one battery, the diode 1 and the diode 4 will conduct only one of them, and the vehicle can still be charged normally.
The utility model takes two battery packs as an example for explanation, and the utility model can realize that the output voltage of each battery can be adjusted when the output voltage difference of a plurality of batteries connected in parallel is large, so that the output voltage of each battery is in a preset voltage requirement range, and a plurality of batteries with different voltages can be directly connected in parallel for use.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, the scope of the present invention is not limited thereto. Various modifications and alterations will occur to those skilled in the art based on the foregoing description. And are neither required nor exhaustive of all embodiments. On the basis of the technical scheme of the utility model, various modifications or changes which can be made by a person skilled in the art without creative efforts are still within the protection scope of the utility model.
Claims (8)
1. A battery parallel management system comprises a plurality of battery packs and is characterized by also comprising a battery parallel management module;
the battery parallel management module comprises a discharge switch group and a charge switch group; one path of the positive electrode of the battery pack is respectively connected with the positive input end of each discharge switch in the discharge switch group, and the other path of the positive electrode of the battery pack is respectively connected with the reverse input end of the charge switch group; the reverse output ends of all the discharge switches in the discharge switch group are connected together to be used as the discharge output positive electrode of the battery parallel management module; the positive input ends of all the charging switches in the charging switch group are connected together to be used as the charging input positive electrode of the battery parallel management module; and the cathodes of the battery packs are connected together to be used as the discharging output cathode or the charging input cathode of the battery parallel management module.
2. The system of claim 1, wherein the number of battery packs is equal to the number of discharge switches; and the number of the discharge switches is equal to the number of the charge switches.
3. The system according to claim 2, wherein the discharge switch employs a first diode, and the charge switch employs a second diode;
one path of the positive electrode of the battery pack is connected to the anode of the first diode; and the other path is connected to the cathode of the second diode;
the cathodes of the first diodes are connected together to serve as the discharge output positive electrode of the battery parallel management module; anodes of the second diodes are connected together to serve as the charging input anode of the battery parallel management module;
and the cathodes of the battery packs are connected together to be used as the discharging output cathode or the charging input cathode of the battery parallel management module.
4. The battery parallel management system according to claim 2, wherein the discharge switch employs a first N-channel MOS transistor, and the charge switch employs a second N-channel MOS transistor;
one path of the positive electrode of the battery pack is connected to the drain electrode of the first N-channel MOS tube; the other path of the MOS transistor is connected to the source electrode of the second N-channel MOS transistor;
the grid electrode of the first N-channel MOS tube is connected with the drain electrode; the source electrodes of the first N-channel MOS tubes are connected together to serve as the discharge output positive electrode of the battery parallel management module;
the grid electrode of the second N-channel MOS tube is connected with the drain electrode; the drains of the second N-channel MOS tubes are connected together to serve as the charging input anode of the battery parallel management module; and the cathodes of the battery packs are connected together to be used as the discharging output cathode or the charging input cathode of the battery parallel management module.
5. The battery parallel management system according to claim 4, wherein the connection between the gate and the drain of the first N-channel MOS transistor is specifically: the grid electrode and the drain electrode of the first N-channel MOS tube are connected through a resistor;
the connection of the grid electrode and the drain electrode of the second N-channel MOS tube is specifically as follows: and the grid electrode and the drain electrode of the second N-channel MOS tube are connected through a resistor.
6. The battery parallel management system according to claim 2, wherein the discharging switch adopts a first N-channel MOS transistor, the charging switch adopts a second N-channel MOS transistor, and the battery parallel management module further comprises a control module;
the input end of the control module is in communication connection with both the anode and the cathode of the battery pack; the output end of the control module is respectively connected to the grid electrode of the first N-channel MOS tube and the grid electrode of the second N-channel MOS tube;
one path of the positive electrode of the battery pack is connected to the drain electrode of the first N-channel MOS tube, and the other path of the positive electrode of the battery pack is connected to the source electrode of the second N-channel MOS tube; the source electrodes of the first N-channel MOS tubes are connected together to serve as the discharge output positive electrode of the battery parallel management module; the drains of the second N-channel MOS tubes are connected together to serve as the charging input anode of the battery parallel management module; and the cathodes of the battery packs are connected together to be used as the discharging output cathode or the charging input cathode of the battery parallel management module.
7. The parallel battery management system according to claim 6, wherein the communication connection is wireless communication or wired connection.
8. The battery parallel management system according to claim 6, wherein the control module adopts an editable chip with input and output functions; and the number of output pins of the editable chip is equal to the number of the discharge switches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121605658.7U CN215663045U (en) | 2021-07-14 | 2021-07-14 | Battery parallel management system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121605658.7U CN215663045U (en) | 2021-07-14 | 2021-07-14 | Battery parallel management system |
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| CN215663045U true CN215663045U (en) | 2022-01-28 |
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Granted publication date: 20220128 |